National Center for Biotechnology Information NCBI NLM MEDLINE humans pubmed abstract nih national institutes of health national library of medicine research support non-u.s. gov't united states / epidemiology Comparative Study microbial sensitivity tests gram-negative bacterial infections / epidemiology gram-negative bacterial infections / microbiology anti-infective agents / pharmacology* fluoroquinolones* gram-negative bacteria / drug effects* population surveillance* canada / epidemiology pmid:11448564 doi:10.1016/s0732-8893(01)00241-3 d j hoban s k bouchillon gemifloxacin surveillance study research group gemifloxacin gram-positive bacteria / drug effects* gram-positive bacterial infections / epidemiology gram-positive bacterial infections / microbiology naphthyridines / pharmacology*